1621587890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{265399}}^1$

素因数の和:265466

約数の個数: 32

約数和(自身を含む): 3210278400

約数和(自身を除く): 1588690510

約数列:

[1, 2, 5, 10, 13, 26, 47, 65, 94, 130, 235, 470, 611, 1222, 3055, 6110, 265399, 530798, 1326995, 2653990, 3450187, 6900374, 12473753, 17250935, 24947506, 34501870, 62368765, 124737530, 162158789, 324317578, 810793945, 1621587890]

約数ペア:

[(1, 1621587890), (2, 810793945), (5, 324317578), (10, 162158789), (13, 124737530), (26, 62368765), (47, 34501870), (65, 24947506), (94, 17250935), (130, 12473753), (235, 6900374), (470, 3450187), (611, 2653990), (1222, 1326995), (3055, 530798), (6110, 265399)]